Amoeba Flashcards
Something that all amoebas have for locomotion.
Pseudopodia
Amoebas possess two (2) life cycles. What are they?
- Trophozoite stages
- Cystic stages
All amoebas have a cystic stage except…
Entamoeba gingivalis
All amoebas inhabit the intestine except…
Entamoeba gingivalis
Inhabits the oral cavity.
All amoebas are commensals except…
Entamoeba histolytica
It occurs in the large intestine and goes from trophozoite to cyst
Encystation
KEY WORD: Encyst (to be/form a cyst)
It occurs in the small intestine and goes from cyst to trophozoite.
Excystation
KEY WORD: Excyst
What is the invasive stage of amoebas?
Trophozoite
What is the infective stage of amoebas?
Cyst
It is the motile stage of amoebas.
Trophozoite
KEY WORD: motile stage (moving)
It is the non-motile stage of amoebas.
Cyst
KEY WORD: non-motile stage (immobile)
Where are cysts usually found?
Formed stools
Where are trophozoites usually found?
Diarrheal and liquid stools
Can amoebas excreted as trophozoite mature to a cyst?
No, they die after a few minutes (30 min.).
What staining solution can be used to study cysts?
- D’Antoni’s Iodine Stain
- Trichome Stain (Permanent Stain)
It is the vegetative stage of amoebas.
Trophozoite
